fix: add translations for every SCThing

fix: add field translations for  basic interfaces

fix: add translations for Message, Ticket & Video

fix: add translations for AcademicEvent, Article, Book and Building

fix: add translations

fix: add translations for Dish, Floor, Person and Room

fix: finalize  known translations

fix: add translations for setting

fix: add empty translations for fieldValues

style: applied tslint rules

fix: add missing fieldValueTranslations

fix: remove illegal nested translations

src/core/things/Book.ts

@@ -97,10 +97,18 @@ export class SCBookMeta extends SCThingMeta implements SCMetaTranslations<SCBook
    */
   fieldTranslations = {
     de: {
-      ...SCCreativeWorkMeta.getInstance().fieldTranslations.de,
+      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations
+        .de,
+      bookEdition: 'Buchausgabe',
+      isbn: 'ISBN',
+      numberOfPages: 'Seitenzahl',
     },
     en: {
-      ...SCCreativeWorkMeta.getInstance().fieldTranslations.en,
+      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations
+        .en,
+      bookEdition: 'book edition',
+      isbn: 'ISBN',
+      numberOfPages: 'number of pages',
     },
   };
 
@@ -109,11 +117,13 @@ export class SCBookMeta extends SCThingMeta implements SCMetaTranslations<SCBook
    */
   fieldValueTranslations = {
     de: {
-      ...SCCreativeWorkMeta.getInstance().fieldValueTranslations.de,
+      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
+        .fieldValueTranslations.de,
       type: 'Buch',
     },
     en: {
-      ...SCCreativeWorkMeta.getInstance().fieldValueTranslations.en,
+      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
+        .fieldValueTranslations.en,
       type: SCThingType.Book,
     },
   };